Axle-box



(No Model.)

B. P. GURTISS.

AXLE BOX.

Pnzns. Photo-Lithograph". Wnhinginn, n. b,

UNTTED STATES PATENT OFFICE.

EVERETT P. CURTISS, OF HARTFORD, CONNECTICUT.

AX L E B O X SPECIFICATION forming part of Letters Patent No. 322,584,dated July 21,1885.

Application filed May 25, 1885. (N model.)

To all whom it may concern:

Be it known that I, EVERETT P. GURTIss, of Hartford, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Axle-Boxes, of which the following is a description,reference being had to the accompanying drawings, where Figure 1 is aview in central longitudinal section of a hub and box embodying myinvention and attached to an axle-arm. Fig. 2 is a detail side view ofone form of my irnproved pa-rtible axle-box, shown as pulled apart tobetter illustrate the construction. Fig. 3 is an end view of theaxle-box and a contained anti-friction bearing. Fig. 4 is a side view ofthe annular washer adapted to close the open end of the socket in theaxlearm. Fig. 5 is a side view of the flanged nut. Fig. 6 is a plan viewof the recessed end of the annular washer with ball-bearings located inthe recess.

Theobject of my invention is toprovide an axle-box for use on vehiclesof all descriptions, which box is particularly adapted for use withso-called anti-friction bearings; and

I my improvement consists in a partible axleone form of my improvedpartible axle-box, I

which is cylindrical in outline, and bears upon each end the enlargedoutward-opening sockets 0. These enlargements of the axle-box are borneupon separate parts of the box, so that the respective parts may beinserted in the hub d from opposite ends thereof. This point of junctionis preferably midway of the box, the respective parts being connected byhalving them together, as illustrated, and slipping the end of one partwithin the other until the shoulders on the enlargement-s come'to abear-1 ing against the opposite faces of the hub; or

larged ends of the latter.

they may be fastened by means of a thread cut on the smaller part andfitting a threaded socket in the larger part, the particular method ofjoining the parts not being material to m invention.

In the outward-opening sockets c in the enlargements on the oppositeends of the box is placed an annular ring bearing a series ofanti-friction rollers, preferably of the kind shown and described inLetters Patent of the United States to O. R. Chaplain, dated April 10,1877, No. 189,427. Any other form of antifriction bearing, however, maybe fitted and used within the sockets in the ends of the axlebox. Theinner diameter of this set of antifriction bearings e is less than-theinner diameter of the box, so that none of the rolling friction comesupon the inside of the box except in those parts where the anti-frictionbearings are interposed between the axle-arm and the boxthat is, in thesockets in the en- Each of these sockets c in my form of axle-box,herein described, is of such diameter and so shaped that the inner endwall forms a shoulder that limits the endwise play of the anti-frictionbearings that are located within such sockets.

Between the shoulder a on the axle-arm and the inner end of the axleboxis inserted an annular metallic washer, f, the face of which next to theshoulder is grooved to receive one or more balls, g, which are held inthe groove by turning slightly downward the edge of the flange f, whichforms the inner wall of the groove next to the axle-arm, and such ballor balls project far enough beyond the face of the annular washer tobear against the shoulder on the axle-arm.

A similar annular washer is located between the open end of the socketon the outer end of the axle-box and the flange on the nut h, this nutbeing adapted to fit the threaded end of the axle-arm, and when screwedhome to hold the respective washers against the box ends and theshoulder on the axle-arm, so that there shall be no end play of theparts.

In using the form of my improvement shown in the drawings the hub isfirst bored and counter-bored to form a socket for the axlebox,which isinserted in place from opposite ends of the hub, and it is then readyfor the reception of the anti-friction bearings and for 2'. Incombination, a partible axle-box hav- Inounting on the aXle-arm,with theparts in ing on each end outward-opening sockets, antiposition,substantially as described. friction bearings fitted in said socketswith I claim as my invention their inner diameter less than the innerdiam- 5 1. As a new article of manufacture, apartieter of the axle box,and an axle-arm, all sub- I 5 ble axle-box having on each endoutwardopenstantially as described. ing sockets, which are larger indiameter than EVERETT P. OURTISS. the central opening through theaxle-box and form chambers adapted to contain anti-friction 1o rollers,all substantially as described.

Witnesses:

CHAS. L. BURDETT, H. R. WILLIAMS.

